Override CustomRulerLabel textStyle

[b14cknc0d3]

Is your feature request related to a problem? Please describe.
For some case I need custom label text style for my own.
eg.

var range = {value:25,actualValue:388,} # value is % and 388 real value to show

          //    const CustomRulerLabel(
          //           text: '',
          //           value: 0,
          //         ),
          //         CustomRulerLabel(
          //           text: extraValue!.isEmpty ? "333.8" : extraValue,
          //           value: pointValue,
          //         ),
          //         const CustomRulerLabel(
          //           text: '',
          //           value: 100,
          //         )

In this case I need black color text not from rangeLinearGauge color.

rangeLinearGauge: List.generate(5, (index) {
            double segmentStart = (index * endValue) / 5;
            double segmentEnd = ((index + 1) * endValue) / 5;
            List<Color> colors = [
              const Color(0xffc90000),
              const Color(0xffff8000),
              const Color(0xfff9e000),
              const Color(0xffb5ff00),
              const Color(0xff4dbc00),
            ];
            return RangeLinearGauge(
              start: segmentStart,
              end: segmentEnd,
              color: colors[index],
            );
          }),

Describe the solution you'd like
I need to override CustomRulerLabel text style.